What common substance, found in rocks, is secreted by coral to create reefs?
A. beryllium phosphate
B. calcium carbonate
C. nitrous oxide
D. sodium chloride
The common substance, found in rocks, is secreted by coral to create reefs calcium carbonate.
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Asked 6/18/2014 1:00:51 PM
Updated 6/18/2014 3:59:14 PM
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